2-MESON DOORWAY MODEL OF LOW-ENERGY ANTIPROTON PROTON ANNIHILATION

被引：21

作者：

MUNDIGL, S ^{[1
]}

VACAS, MV ^{[1
]}

WEISE, W ^{[1
]}

机构：

[1] UNIV VALENCIA,DEPT FIS TEOR,VALENCIA,SPAIN

来源：

NUCLEAR PHYSICS A | 1991年 / 523卷 / 3-4期

关键词：

D O I：

10.1016/0375-9474(91)90033-3

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We investigate a semiclassical model for ppBAR annihilation into any number of pions and kaons at antiproton lab momenta P(lab) < 3 GeV/c, based on the hypothesis of two-meson doorway states as intermediate channels in the annihilation process. All relevant selection rules are incorporated. We find that with baryon radii of about 0.6 fm, the energy dependence of partial cross sections in all important annihilation channels can be reproduced successfully. Angular distributions for ppBAR --> pi-+ pi-- and K+K- can also be described, provided one admits a substantial s-wave suppression in this model.

引用

页码：499 / 516

页数：18

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